package Thread.Demo14;

/**
 * @Author Miku
 * @Create 2021/5/20 16:31
 * 死锁：多个线程互相抱着对方需要的资源，然后形成僵持
 */
public class DeadLock {
    public static void main(String[] args) {
        Makeup g1 = new Makeup(0,"miku");
        Makeup g2 = new Makeup(1,"luka");

        g1.start();
        g2.start();

    }
}

/**
 * 口红
 */
class Lipstick {

}

/**
 * 镜子
 */
class Mirror {

}

class Makeup extends Thread{

    /**
     * 需要的资源只有一份，用static来保证只有一份
     */
    static Lipstick lipstick = new Lipstick();
    static Mirror mirror = new Mirror();

    /**
     * 选择
     */
    int choice;
    /**
     * 化妆的人
     */
    String girlName;

    Makeup(int choice, String girlName) {
        this.choice = choice;
        this.girlName = girlName;
    }

    @Override
    public void run() {
        //化妆
        try {
            makeup();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    /**
     * 化妆，互相持有对方的锁，就是需要拿到对方的资源
     */
    private void makeup() throws InterruptedException {
        if (choice == 0) {
            synchronized (lipstick) {
                System.out.println(this.girlName+"获得口红的锁");
                Thread.sleep(1000);
            }
            synchronized (mirror) {
                System.out.println(this.girlName+"获得镜子的锁");
            }
        }else {
            synchronized (mirror) {
                System.out.println(this.girlName+"获得镜子的锁");
                Thread.sleep(2000);
            }
            synchronized (lipstick) {
                System.out.println(this.girlName+"获得口红的锁");
            }
        }
    }

}
